Conditional sentences Conditional sentences can be 4 tipes: Zero, First, Second, Third and Mixed. 1) Zero: About facts. 100% true. Scientific thinks. [If + Present Simple, Present Simple. If+ sub+base verb, sub+base verb] Ex: If ice melts, it becomes water. If I train every day, I feel myself beter. 2)First : About facts in future. Not scientific, but probably. Most of the time it's true [If + Present Simple, Future Simple. If + sub+base verb..., sub+MODAL+base verb] Ex: If i go to movie, i will/may/might/could eat popcorn If I train more, I will feel beter. 3)Second Conditional Sentences: unreal present events or future events [If+ past simple, Future in the Past (would + Infinitive without to)] If +sub+1verb, sub+would+ verb without to] EX: If I found a wallet, I would ( I'd) go to police Giving advice: If I WERE you, I'd look for another job 4) Third: the unreal events that could happen in the past [If + Past Perfect,would + Present Perfect (have+V3/Ved).] EX: If I had treined more, I would have goon to the competition.